Air quality assessment in Delhi: Before and after CNG as fuel

被引：43

作者：

Chelani, Asha B. ^{[1
]}

Devotta, Sukumar ^{[1
]}

机构：

[1] Natl Environm Engn Res Inst, Nagpur 440020, Maharashtra, India

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2007年 / 125卷 / 1-3期

关键词：

air quality; vehicular emission; CNG; control policies;

D O I：

10.1007/s10661-006-9517-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A number of policy measures have been activated in India in order to control the levels of air pollutants such as particulate matter, sulphur dioxide (SO2) and nitrogen dioxide (NO2). Delhi, which is one of the most polluted cities in the world, is also going through the implementation phase of the control policies. Ambient air quality data monitored during 2000 to 2003, at 10 sites in Delhi, were analyzed to assess the impact of implementation of these measures, specifically fuel change in vehicles. This paper presents the impact of policy measures on ambient air quality levels and also the source apportionment. CO and NO2 concentration levels in ambient air are found to be associated with the mobile sources. The temporal variation of air quality data shows the significant effect of shift to CNG (Compressed Natural Gas) in vehicles.

引用

页码：257 / 263

页数：7

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